Fuji Weekly cover, Aug 1930
Nikke business clothing poster ad by Gihachiro Okayama, 1931
Nikke sports coat poster ad by Gihachiro Okayama, 1931
Nikke socks and knitwear poster ad by Gihachiro Okayama, 1932
Nikke socks and knitwear poster ad by Gihachiro Okayama, 1936
Nikke coat poster ad by Gihachiro Okayama, 1937
Nikke summer clothing poster ad by Gihachiro Okayama, 1937
Nikke socks and knitwear poster ad by Gihachiro Okayama, 1937
Source: “Modernism on Paper: Japanese Graphic Design of the 1920s-30s” (published 2003)